Abstract:This paper studies the problem on site management of construction waste by using the theory of system dynamics, and analyzes the main factors affecting the site management of construction waste and the relationship between them, establishes a construction waste site management model including waste generation, site sorting and waste disposal, at the same time, the simulation evaluation is carried out with the help of software Vensim. The empirical results show that, the construction waste site management model based on system dynamics can effectively simulate the construction waste generation and treatment in construction stage, the production and disposal cost of the waste can be reduced effectively by reducing the design change, improving the consciousness of reducing the quantity and classifying the construction site. This method can be used to simulate and predict the effect of project management.